Flushing tank



A. J. LUND BERG. FLUSHING TANK. APPLICATION FILED FEB. 25, 1920.

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FLUSHING TANK.

Application filed February 25, 1920. Serial No. 381,285.

To all whom it may concern:

Be it known that T, ALFRED J. LUNDBERG, a citizen of the United States,residing at the city and county of San Francisco and State or"California, have invented a new and useful improvement in FlushingTanks, of which the following is a specification.

This invention relates to a flushing tank and especially to a siphonpriming attachment therefor.

One of the objects of the present invention is to provide a simple,substantial and easily operated mechanism whereby the filling anddischarging of flushing tanks and the like may be actuated, andespecially to provide a mechanism whereby the use of submerged Valves,etc., which might cause leakage, may be eliminated. v p

7 Another object of the invention is to provide a siphon member throughwhich the flushing water is discharged, and in conjunction therewithmeans for automatically raising the water level in the tank to prime thesiphon member when discharging.

Another object of the invention is to provide means to prevent flushingor emptying of the tank until it is full and able to make a completeflush.

Further objects will hereinafter appear. The invention consists of theparts and the construction, combination and arrangement of parts ashereinafter more fully described and claimed, having reference to theaecompanying drawings, in which- 7 Fig. l is a central verticallongitudinal section through the flushing tank showing the mechanismemployed.

Fig. 2 is a cross section of the tank. Referring to the drawings indetail, A indicates a tank of suitable constructiomand 2 a dischargepipe connected. therewith. This pipe extends upwardly into the tank andterminates in the siphon member 3. The upper bend of the siphon isflattened as at 4:, and means are provided for priming the siphonwhenever it is desired to empty the tank for flushing purposes. Themeans employed consists ofan auxiliary tank B, an inlet valve 5., afloat 6 whereby it is actuated,

inany suitable manner and is connected with a source of. water supply bymeansof.

a ipe 8. The valve is normally closed as shown 9 by means of a floatactuated lever 10. This lever is pivotally mounted as at 11 on anextension 12 formed on the valve casing, and it 1s provided with afork-shaped rocker arm 13 which straddles a stem 14,

connected with the valve 9; movement of the the auxiliary receiving tankB. This tank is pivotally mounted on brackets 17, and the pivotalconnections are eccentrically positioned to permit overbalancing ortilting movement of the auxiliary tank when this is filled. Theauxiliary tank is normally held in position by the latch 7, said latchengaging a shoulder or lug 18 formed on the side of the tank, and thetank is also held in upright position by a secondary latch 19, thefunction of whlch will hereinafter be described. The operation of themechanism employed will be as follows:

When the main tank A is empty, it is ob- .vious that the float 6 willrest on the bottom of the tank and that the lever 10, to which it isattached, will assume a tilted position.

This movement or position of the lever 10 and the float 6 opens thevalve 9 and thereby permits water to enter through pipe 16 and dischargeinto the auxiliary tank 13.

This tank when filled overflows and fills the main tank A and the waterwill continue rising therein until the float reaches a predeterminedposition. The gradual rise of the float and lever naturally closes thevalve 9 and complete closure of the same is obtained when a desiredwater level is reached. If it is desired to empty the tank, it is onlyit necessary to liftupwardly on a lever 7 which forms an extension ofthe latch 7.

This lever and latch are pivotally mounted as at 20 on a bracket member21, and movement of the lever 7 in an upward direction will thereforepull the latch out of engagement with the lug 18 and thereby permit theaux1l- V iary tank to tilt about'its pivotal connection and a latch 7.The inlet valve is constructed mit an overflow through the siphon 3..This.

vention. I further wish it understood that, various changes in theconstruction, com

overflow causes priming of the siphon and the entire contents of themain tank A will therefore be discharged. The float 6 will thereforedrop and the inlet valve 9 will again open and refill the tank.

By referring to Figs. 1 and 2, it will be seen that a second latch 19has been provided. This latch is also pivotally mounted as at 22 on abracket 21, and it is provided with a lever extension 23. The main floatlever 10 is also provided with an extension as shown at 24. The upperend of this extention is hook-shaped as at 25 and engages the outer endof the lever 23. When the float reaches its lowermost position, that is,

when the tank is empty theopposite'end of the lever or the extension 24will reach a raised position indicated by dotted lines as at 26. Thispermits the latch 19 to swing into engagement with the lug 18 andthereby locks the auxiliary tank against tilting movement about thepivotal connection 17, that is a counterweight27 is placed. on the tankand this counterweight returns the tank to normal horizontal positionthe moment it has been emptied. The float simultaneously drops to thebottom of the tank and the opposite end of'the float lever is thereforeraised, thereby permitting the latch 19 to swing inwardly and engage thelug 18. The auxiliary tank is therefore automatically locked againsttilting movement while it, together with the main tank, is beingrefilled and it is therefore impossible to prime the siphon or empty thetank until'it has been completely refilled, that is the float 6 mustreach its uppermost position before the projection 24: on the floatlever becomes sufliciently depressed to swing the latch 19 out ofengagement.

When latch 19 has been swung out of engagement by the rise of the float,it is obvious that latch 7 will support the tank and that if this isswung out of engagement by raising the lever 7 tilting movement of thetank will be permitted. It is therefore impossible to flush or empty thetank except after it has been completely refilled. This is of greatimportance as it reduces waste of water to a minimum.

' By referring to Figs. 1 and 2, it can be seen that the only valveemployed is that indicated at 9'; that all connections with the bottomof the tank are stationary and permanent, and that leakage is entirelyavoided.

A discharge valve is not required due to the siphon 3 employed and costof construction' is therefore materially reduced. While a more or lessspecific form of inlet valve is employed, I wish it understood that anyother form may be employed as this feature does not form an importantpart of the inbination andarrangement of part's may be made by thoseskilled in the art without departing from the spirit of the invention soclaimed.

Having thus described my invention, what I claimand desire to secure byLetters Patent is-- 1. In a device of the character described, a tank,an inlet valve, a siphon actuated discharge pipe, means for priming thesiphon for discharging, and means for preventing priming of the siphonand discharging of the tank when refilling the tank.

2. In a device of the character described a tank, a float actuated inletvalve, a siphon actuated. discharge pipe, means for priming the siphonfor discharging, and means actuated by the float for preventing primingof the siphon and discharging of the tank whilethe inlet valve is openand refilling.

3. In a device of the character described a tank, a siphon actuateddischarge pipe connected with the tank, means in the tank for raisingthe normal water level to prime the siphon for discharging, automaticactuated refilling means, and means actuated thereby for preventingpriming of the siphon during the refilling operation.

4:. A flushing device comprising a main tank, a siphon discharge pipeconnected therewith, an auxiliarytiltable tank mounted within the maintank, means for maintaining a predetermined water level in said tanks, alatch mechanism cooperating with said means to retain said auxiliarytank from tilting during the filling of said tanks, and a second latchmechanism independent of the first named latch, adapted to retain theauxiliary tank from tilting. after the desired water level is reachedand being operable whereby theauxiliary tank may be permitted to tilt toempty the water contained therein into the main tank to raise the waterlevel therein so as to prime the siphon and discharge the water in themain tank therethrough. V

5. In a device of the characterdescribed a tank, a siphon actuateddischarge pipe connected therewith, an auxiliary tank mounted within themain tank, means for maintaining a normal water level in the main tankand in the auxiliary tank, means for holding the auxiliary tank againsttilting, said means permitting tilting of the auxiliary tankto empty itscontents into the main tank and thereby raise the water level to such anextent that overflow and priming of the siphon is started, means forautomatically returning the auxiliary tank to normal position, automaticactuated means for refilling means for locking the auxiliary tankagainsttilting movement while the main tank is being refilled.

6. Ina device of the character described a mainwank, an auxiliary" tankpivotally' the auxiliary tank and the main tank, and

mounted therein, said pivots being eccentrically positioned to permittilting of the tank, a siphon actuated discharge pipe connected with themain tank, an inlet valve adapted to discharge water into the auxiliarytank and by overflow fill the main tank, a float actuated valve adaptedto close the supply through the inlet valve when a predetermined levelis reached in the main tank, means for holding the auxiliary tankagainst tilting and for releasing the same, means for automaticallyreturning the auxiliary tank to normal position after it has beenfilled, and means actuated by the float member for locking the auxiliarytank against tilting movement while the auxiliary tank and the main tankare being refilled.

7. In a device of the character described a main tank, an auxiliary tankpivotally mounted therein, said pivots being eccentrically positioned topermit tilting of the tank, a siphon actuated discharge pipe connectedwith the main tank, an inlet valve adapted to discharge water into theauxiliary tank and by overflow fill the main tank, a float actuatedvalve adapted to close the supply through the inlet valve when apredetermined level is reached in the main tank, means for holding theauxiliary tank against tilting and for releasing the same, means forautomatically returning the auxiliary tank to normal position after ithas been tilted, a latch plvotally mounted within the tank, a lug on theauxiliary tank with which said latch is adapted to engage, and a leveron the latch adapted to be engaged by an extension on the float actuatedlever, said extension on the float actuated lever adapted to hold thelatch in position to prevent tilting of the auxiliary tank while saidauxiliary tank and main tank are being refilled.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ALFRED J. LUNDBERG. Witnesses:

S. I. CLARK, LINDSEY CAMPBELL.

